Key Features
- JIS F-7335 standard compliance for marine use
- Nakajima interlocking design for fast connection
- Solid brass construction resists seawater corrosion
- 40A (1-1/2") nominal size fits standard fire hoses
- Sold as a complete pair (male + female)
- Reliable leak-proof performance under pressure
Technical Specifications
| Specification | Details |
|---|---|
| Size | 40A (1-1/2") |
| Type | Nakajima |
| Standard | JIS F-7335 |
| Connection | Interlocking |
| Material | Brass |
| Unit | Per Pair |
| IMPA Code | 330851 |
Frequently Asked Questions
What is the difference between Nakajima and other coupling types?
Nakajima couplings use a unique interlocking mechanism that aligns and locks with a quarter-turn. They are commonly specified on Japanese-built vessels and in JIS-compliant systems.
Is this coupling compatible with standard 1-1/2" fire hose?
Yes, the 40A (1-1/2") size is designed for standard fire hose of the same nominal diameter. Ensure your hose fittings match the Nakajima profile for proper sealing.
Does the pair include both male and female ends?
Yes, each pair consists of one male and one female coupling, ready for installation on hose ends.
What maintenance is required for brass couplings?
Rinse with fresh water after use in saltwater environments and periodically inspect for wear or deformation. Brass naturally resists corrosion but should be kept free of debris.
Inquire About This Product
Contact us for pricing, availability, and bulk orders:
📧 [Email protected by JavaScript]
📞 [Phone protected by JavaScript]